WhatDiff vs Sauce Finder
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
WhatDiff
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WhatDiff β Compare Files with Precision WhatDiff is a powerful file comparison app that helps you quickly identify differences between files across multiple formats. It supports photos, videos, audio, documents, and other file types from your Photo Library, Files app, and cloud storage platforms. With built-in MD5 checksum verification, detailed file attributes, and advanced comparison tools like line-by-line document diff, WhatDiff gives you deep insight into every file. #######Smart Comparison by File Type ---Photos β’ Use the slider to compare photo content. View and compare detailed metadata, including: β’ File name, size, MD5 β’ Created & modified dates β’ Dimensions, resolution β’ Color space & color profile β’ Device make & model β’ Exposure time, ISO, focal length, F-number β’ Flash, metering mode, white balance β’ Content creator β’ GPS location (latitude & longitude) ---Videos β’ Compare video files with rich technical details: β’ File name, size, MD5 β’ Created & modified dates β’ Dimensions & codecs β’ Duration β’ Color profile β’ Audio channels β’ GPS location (latitude & longitude) ---Audio Analyze and compare audio files: β’ File name, size, MD5 β’ Created & modified dates β’ Codecs β’ Duration β’ Audio channels ---Documents β’ Go beyond basic comparison with content analysis: β’ File name, size, MD5 β’ Created & modified dates β’ Word, character, and line counts β’ Content similarity β’ Content preview β’ Highlighted differences (line-by-line) ---Other File Types β’ For all other formats, WhatDiff provides: β’ File name, size, MD5 β’ Created & modified dates ###Why WhatDiff### β’ Supports multiple file sources (Photos, Files, Cloud) β’ Deep metadata comparison β’ Accurate checksum verification β’ Clear, structured results for quick insights Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Sauce Finder
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Sauce Finder is the fastest way to discover where any image on your iPhone came from. Instead of bouncing between websites, run Google Lens, SauceNAO, TinEye, and Yandex side by side in a single native iOS app. KEY FEATURES - One-tap reverse image search from your gallery or camera - Four search engines in one place (Premium): Google Lens, SauceNAO, TinEye, Yandex - Share Extension - search images directly from Photos, Safari, Files, or any app - Instant engine switcher in the result browser - Search History with 30-day retention (Premium) - Re-search any past image - Default engine preference for personalized workflow (Premium) - Lock-screen Live Activity showing upload and search progress PRIVACY-FIRST BY DEFAULT Your photos never live on our servers. We upload to a temporary image host that automatically deletes content after 10 minutes. No accounts, no email signup, no profile required. PREMIUM Unlock Sauce Finder Premium for: - All four search engines (Lens / SauceNAO / TinEye / Yandex) - 30-day search history - Default engine selection - Zero ads Subscription auto-renews unless cancelled at least 24 hours before the end of the period. You can manage and cancel anytime in App Store Settings. Lifetime is a one-time purchase, never expires. HOW IT WORKS 1. Pick a photo or take one, or use the iOS share sheet 2. We upload to a temporary public host (10-min auto-delete) 3. The temporary URL is sent to your selected search engines 4. Results open in the built-in browser, tap to switch engines PERFECT FOR - Artists tracing inspiration or finding original sources - Anime/manga fans (SauceNAO finds doujin + fanart sources) - Researchers verifying image authenticity - Designers checking if a stock photo is widely used - Anyone who got curious about "where is this from?" WHY FOUR ENGINES - Google Lens - broad web index, AI-powered visual understanding - SauceNAO - gold standard for anime, manga, fanart, illustrations - TinEye - exact and near-duplicate detection - Yandex - surfaces results that other engines miss, especially from Eastern European sources Privacy Policy: https://saucefinder.app/privacy Terms of Use: https://saucefinder.app/terms
Screenshots
Verdict
The clearest difference is ads: WhatDiff at none against Sauce Finder's shown. Sauce Finder's advantage is update cadence (every 3 days vs every 5 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. WhatDiff sells 3 in-app purchases, starting at $2.99 per month and Sauce Finder sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
WhatDiff ships an update every 5 months, Sauce Finder every 3 days. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.
| Parameter | WhatDiff | Sauce Finder |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 3 days β better |
| Ads | No β better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 | 16.2 β better |
| Further details β not scored | ||
| Size | 2 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | ζ ι | Huy Trinh Duc |
In-app purchases
WhatDiff
- WhatDiff Month Subscription$2.991 Month
- WhatDiff Annual Subscription$12.991 Year
- WhatDiff Lifetime License$24.99
Sauce Finder
- Sauce Finder Premium Monthly$1.991 Month
- Sauce Finder Premium Lifetime$9.99





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